Planetary Improvements

From Sins of a Solar Empire

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Contents

Civilian Infrastructure

This upgrade increases the maximum population a colony can sustain. It also eliminates the planet underdevelopment penalty associated with new colonies. This upgrade is important because the larger the population of a planet, the greater the tax income it contributes to an empire. Terran Planets usually support the largest infrastructure and Asteroids the least (Dead Asteroids only stop siphoning money away with the upgrade), but it's still advisable to max this out quickly, as it will lead to increased credit production and prevent you from losing income to under-development.

Population by Planet and Infrastructure Level

Upgrade Level

Terran

Desert

Volcanic

Ice

Asteroid

Dead Asteroid

0

10*

10*

10*

10*

10*

0*

1

30*

30*

30*

30*

20

0

2

100

100

70

70

n/a

n/a

3

190

190

n/a

160

n/a

n/a

4

280

n/a

n/a

n/a

n/a

n/a

(*) Indicates planet underdevelopment is suffered at this level.

Emergency Facilities

This upgrade increases the planet's health by allowing the populace of the planet to "build" various shelters and emergency services to protect them from a multitude of disasters. Thus allowing it to survive extended planetary bombardment. This upgrade is important because it gives defending fleets more time to arrive and to destroy the attacking fleet before a colony is destroyed.

Hit Points at Each Upgrade Level

Upgrade Level

Terran/Desert/Ice/Volcanic

Asteroid/Dead Asteroid

Pirate Base

0

1500

1000

6000

1

3000

2500

n/a

2

4500

n/a

n/a

3

6000

n/a

n/a

Explore Planet

This upgrade explores the planet for any special Planet Bonuses or Artifacts a planet may possess. This upgrade is important because the special bonuses can make the planet more efficient and artifacts provide empire-wide bonuses. You can search any planet up to two times, but no planet can ever have more than two planet bonuses and one artifact. Artifacts or planet bonuses can never be found on player homeworlds. If you conquer an enemy homeworld, be sure not to purchase this upgrade!

Designate Capital Planet

This upgrade makes the planet the new capital of an empire. This upgrade can be useful if an empire's current capital is in a bad location, since allegiance is based upon a planet's distance in relation to the capital. The upgrade costs 2000 credits, 300 metal, and 200 crystal.

Logistics Capacity

This upgrade increases the number of logistic slots available on a planet. Logistics slots are used for constructing productive Orbital Structures such as Shipyards, Refineries, and Trade Ports. This upgrade can be useful if an empires wants to build additional research or productive structures. Upgrading Logistical Capacity will also produce more constructor vessels, which enables faster assembly when you are building a number of structures.

In most cases, it's actually cheaper to colonize a new planet for its "free" logistics space rather than paying for additional space at an existing planet. That's if there is still unclaimed real estate around.

Logistic Slots Supported by Planets at each Upgrade Level

Upgrade Level

Terran

Desert

Ice/Volcanic

Asteroid

Dead Asteroid/Pirate Base

0

12

12

8

6

0

1

18

18

14

12

n/a

2

24

24

20

n/a

n/a

3

n/a

30

n/a

n/a

n/a

4

n/a

36

n/a

n/a

n/a

Tactical Capacity

This upgrade increases the number of tactical slots available on a planet. Tactical slots are used for constructing defensive Orbital Structures such as Point Defense turrets, Hangar Bays, and Repair Platforms. This upgrade can be useful if an empire wants to permanently augment a colony's defense. Upgrading Tactical Capacity will also produce more constructor vessels, and in larger quantities than Logistics upgrades, which enables faster assembly when you are building a number of structures. Which might matter a lot if you're hastily replacing destroyed defenses.

The first two levels of this upgrade add one extra construction frigate to the planet. Different tactical structures require different numbers of tactical slots.